Alcohol Content in Grams

Convert drink volume and ABV to an estimated ethanol mass.

Your numbers

Pure alcohol mass

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Approximate ethanol density at room temperature. Standard-drink definitions vary; this does not estimate blood alcohol, driving fitness or a safe consumption limit.

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Formula

Use G = Va×0.789. V is drink volume in mL and a is alcohol by volume as a fraction. G is estimated ethanol mass in g. Divide by your entered grams per standard drink for standard-drink equivalents.

Convert drink volume and ABV to an estimated ethanol mass.

Worked example

Drink volume (mL): 500
Alcohol by volume (%): 5
Grams in your local standard drink: 10

Pure alcohol mass: 19.725 g
Entered standard-drink equivalents: 1.9725

Scope and limitations

Approximate ethanol density at room temperature. Standard-drink definitions vary; this does not estimate blood alcohol, driving fitness or a safe consumption limit.

Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.

Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.

Formula version: 641a96b48c0f · Example checked: 2026-10-30

Methodology